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Targeted next generation sequencing for newborn screening of Menkes disease. | LitMetric

Targeted next generation sequencing for newborn screening of Menkes disease.

Mol Genet Metab Rep

Parabase Genomics, Inc., Boston, MA, United States of America.

Published: September 2020

AI Article Synopsis

Article Abstract

Purpose: Population-based newborn screening (NBS) allows early detection and treatment of inherited disorders. For certain medically-actionable conditions, however, NBS is limited by the absence of reliable biochemical signatures amenable to detection by current platforms. We sought to assess the analytic validity of an targeted next generation DNA sequencing assay as a potential newborn screen for one such disorder, Menkes disease.

Methods: Dried blood spots from control or Menkes disease subjects ( = 22) were blindly analyzed for pathogenic variants in the copper transport gene, The analytical method was optimized to minimize cost and provide rapid turnaround time

Results: The algorithm correctly identified pathogenic variants, including missense, nonsense, small insertions/deletions, and large copy number variants, in 21/22 (95.5%) of subjects, one of whom had inconclusive diagnostic sequencing previously. For one false negative that also had not been detected by commercial molecular laboratories, we identified a deep intronic variant that impaired mRNA splicing.

Conclusions: Our results support proof-of-concept that primary DNA-based NBS would accurately detect Menkes disease, a disorder that fulfills Wilson and Jungner screening criteria and for which biochemical NBS is unavailable. Targeted next generation sequencing for NBS would enable improved Menkes disease clinical outcomes, establish a platform for early identification of other unscreened disorders, and complement current NBS by providing immediate data for molecular confirmation of numerous biochemically screened condition.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7378272PMC
http://dx.doi.org/10.1016/j.ymgmr.2020.100625DOI Listing

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